We have two unlocked iPhones 7's that have given us nothing but issues on the phone side since we got them. We are on Sprint & although Sprint has it's issues, we have had way more problems with these phones than with any others that we used prior (iPhone 5s, iPhone 6, iPhone SE). The main issue is that when you answer a call, the other person can't hear you. I would always have to say Hello twice when answering calls, as the first one was never heard. Sometimes they would hear the second Hello, sometimes not. After months of playing around with settings, etc. I finally found the culprit: the continuity feature that allows me to answer calls on my other Apple devices. Once I turned that off, everything works perfectly. I'm wondering if anyone else has had this issue? If so, have you figured out a way to resolve it so you can use continuity? It's hard to tell if this is a Sprint issue or an Apple issue, but I'm certain that if I talk to Sprint, they'll say it's Apple & if I talk to Apple they'll say it's Sprint. Since I've not had this problem on any other iPhone, and it is now an issue on both 7's, I'm fairly certain it's an issue with the phones themselves, but I'm also pretty sure that replacing them won't fix anything, as the chances I got two bad iPhones is pretty remote. I can live without the feature if I have to, but if someone else has had this same issue & found a way to fix it, I'd love to have it back.